Remove vhost0 mtu for contrail

Related: PROD-22734
Parameter breaks all related interfaces. With dpdk and without

Change-Id: I5c2fc9d3b6d2b872a157c5d99aa27ed28abae82e
diff --git "a/\173\043 interfaces \043\175/bond0_ab_ctl_contrail" "b/\173\043 interfaces \043\175/bond0_ab_ctl_contrail"
index 5d7011a..1a4370d 100644
--- "a/\173\043 interfaces \043\175/bond0_ab_ctl_contrail"
+++ "b/\173\043 interfaces \043\175/bond0_ab_ctl_contrail"
@@ -59,7 +59,6 @@
                 - bond0
 
               vhost0:
-                mtu: 9000
                 address: ${_param:_esc}{_param:tenant_address}
                 netmask: ${_param:_esc}{_param:tenant_network_netmask}
                 enabled: true